Questions about building an incubator

Right now the only thing i really need help with is trying to make an egg turner for my incubator. If anyone can provide any info or anything, i would be most grateful!

I would like to create an egg turner that i can set to rotate X amount of times a day ( id like to set it to 7 or so times a day).
Id like it to be able to be hooked up to 4 or 5 trays . Im building my incubator inside a wine cooler, so the trays will be stacked vertical.
It would be great if i could hook it up to a LED display? Although i have no idea how to do that. If anyone can see where im going with this and provide any information, i would be most grateful!